text: According to Yen, "patient 4514" showed signs of the disease on May 17?
classes:  No, on May 17, Patient 4514 was announced to have tested negative for the first time.  Also, on May 17, Patient 4514 was announced to have tested negative for the first time.  Yes, on May 17, Patient 4514 was announced to have tested negative for the first time.